A few comments here:
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First off, I’m just another user giving my thoughts. Sense might have other ideas.
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Second, it would be interesting to post the power/energy usage associated with the power-on of your (I assume) rack. You can post it right here using the upload arrow. But I wouldn’t expect Sense to get much from it, yet. The data scientists there are busy working on other, more common, hard power signature puzzles. You can read on the blog about their work on EVs and mini-splits, two devices that don’t easily fit the current detection paradigm…
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I don’t think anyone makes a 240V Sense compatible smart-plug except for TP-Link. But you have to look at their Euro models for 240V, which actually have all the same innards as the US models except for the plug mezzanine adapter card. The EU HS110 model goes up to about 3800 Watts. Probably still not enough for you, even if you could figure out how to readapt…
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As for emulating a TP-Link smart plug, the info to do it is floating around. First you would probably have to emulate one sufficiently to authenticate with the TP-Kasa App.
- Then you would need to develop responder code to regularly query the the power usage of your Antminers and respond quickly when the Sense monitor asks for status…